what happen when ac motor is connected with dc current

4 Answers  

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What is derating?, Why it is necessary, it is same for all means for drives, motors,and cables.

1 Answers  

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what is the use of back emf?

1 Answers  

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Why we are use dol starter up to 10 hp

0 Answers  

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How does frequency affect KVA rating of a transformer? If a 500 kva, 500 to 250 v, 60 hz t/f used in Canada is to be operated on 50 hz in Europe frequency then how will its KVA rating change? a-increase b-decrease c-remains same

1 Answers  

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i have attended the interview on 4th June,08 at Kolkata in IOCL, can anybody tell me what is its result

0 Answers   IOCL,

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can i use 10 mfd + 6 mfd instead of 15 mfd capacitor in single phase motor as running capacitor

3 Answers  

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what is the earthing condition between earth & phase.

3 Answers   ABB,

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what is the material use in bus bar & why.

3 Answers  

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Is any AC drive(VFD) had a feature of DC injection braking? if available please mention the detail. i.e drive can supply braking torque when the motor in idle state.

0 Answers  

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basic princple of induction and synchronous motor

1 Answers  

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State the types of distortions in amplifier?

0 Answers  

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